Flu shot (vaccine)

Unclear

Influenza prevention in healthy Seniors

EVIDENCE | POORLY TESTED - 1 study with 1,348 seniors

EFFECTIVENESS | UNCLEAR

SAFETY | MILD RISKS

Flu shot vaccine with “dead” inactivated viruses. Only 1 valid study conducted on benefits and risks, with 1,348 seniors. More research needed. May prevent symptoms, but does not prevent flu complications. Strong side effects.

Flu shot (vaccine)

Unclear

Influenza prevention in Children with Cancer

EVIDENCE | NEEDS MORE TESTING - 10 studies with 770 children

EFFECTIVENESS | UNCLEAR

SAFETY | MILD RISKS

Flu shot vaccine with “dead” inactivated viruses in children with cancer undergoing chemotherapy. 10 studies conducted, with 770 children. Generates a relatively mild immune response during chemotherapy. Prevention of flu symptoms and complications is unknown and was not measured. Mild side effects.

Influenza vaccines, also known as flu shots or flu jabs, are vaccines that protect against infection by influenza virus. A new version of the vaccine is developed twice a year as the influenza virus rapidly changes.Their effectiveness varies from year to year. The effectiveness in those under two years old and over 65 years old is unknown due to the low quality of the research. (source)